if you wanted to take out Stromkirk Noble , Doomed Traveler would be a good option. i would test it out a bit and see how it plays. i would then take out the Stromkirk Captain s as you only really have 1 vamp with which you will be attacking with regulary... and as you pointed out, she really doesnt need first strike too badly. i would then opt for the 3 Browbeat of those options or some other draw engine. Terminate would be perfect. i am mostly familiar with standard and so i sometimes forget that things like Terminate are actually a card. i am still not a huge fan of Act of Treason .

I read around some magic forums and it is widely stated that Browbeat might not be the best choice, because you give the enemy an advantage with it. You will just never get what you need

3x Sign in Blood seems to be a fair trade here, also Phyrexian Arena

Any idea which card could help the deck more than Act of Treason ?

2x Damnation getting sideboarded against token decks

Instead Act of Treason :

Grave Pact (works well with Blood Artist and adds control)

or Distress

Maybe I am a bit too hectic here tho

Browbeat + Blightning + Sign in Blood / Phyrexian Arena seems to be strong overall aswell, as it get's me lot of advantage

Is there really no edit function on comments? :s

-1 Browbeat and -2 Act of Treason for +3 Sign in Blood // Phyrexian Arena seems to be viable

I got a playset of sign here, so I will start using them first.

When playing Multiplayer (longer rounds), I can sideboard Browbeat (useless when 40Life+) and Blightning (same) for Olivia Voldaren and two other needed cards

yeah, i understand why so many people dislike Browbeat . it does give your opponent the choice of which one they want... but they are still choosing between two evils. if they choose the dmg, cool. thanks for making my job as a fairly aggressive deck 25% easier. if they choose the cards, cool. thanks for refilling my hand in a fairly aggressive deck. either way they lose and you win. but overall, i like where its at right now. doesnt have quite as much control as im used to and as such would be privy to adding some Condemn s, Path to Exile s, or Lightning Bolt s. but it seems to play fairly smooth and i wouldnt change too much. the card draw is very nice for a deck not running blue.